var fs = require('fs');
var { Buffer } = require('buffer');
// function to encode file data to base64 encoded string
function base64_encode(filePath) {
    console.log(Buffer.from);
    // read binary data
    var bitmap = fs.readFileSync(filePath);
    // convert binary data to base64 encoded string
    return Buffer.from(bitmap).toString('base64');
}

// function to create file from base64 encoded string
function base64_decode(base64str, filePath) {
    // create buffer object from base64 encoded string, it is important to tell the constructor that the string is base64 encoded
    var bitmap = Buffer.from(base64str, 'base64');
    // write buffer to file
    fs.writeFileSync(filePath, bitmap);
}

module.exports = {
    base64_encode, base64_decode
}
